Pillow Blocks
Sealmaster TB-28C
Sealmaster Mounted Cast Iron Tapped Base Pillow Block Ball Bearing - 52100 Bearing Steel, Black Oxided - Setscrew Lock - TB-28C
TB-28 is also available as
Dynamic Load Rating (lb)
7,901
Housing Base
Solid
Thread Size
1/2-13
Rolling Element
Ball Bearing
Need help confirming fit? Send us the current part number, shaft size, housing photo, or equipment model.
Product Overview
- Powder coated epoxy cast iron housing with extended inner ring bearings
- Zone hardened inner ring with 120° spacing setscrew with diamond faceted setscrews
- Single lip contact seal
- Unique land riding retainer design provides superior pocket clearance that allows for 360° grease circulation around the rolling elements resulting in better retained and utilized lubrication.
- Sealmaster™ exclusive lock pin , dimple for direct lubrication and anti-rotation
Dimensions
| Dim. | Meaning | in | mm |
|---|---|---|---|
| A | Base to Center Height | 2 1/8 | 54.0 |
| B | Base Length | 5 | 127.0 |
| C | Bolt Spacing | 3 3/4 | 95.3 |
| D | Housing Width | 2 | 50.8 |
| H | Overall Height | 4 1/4 | 108.0 |
| J | 1 15/16 | 49.2 | |
| K | Centerline to Outermost Bearing Face | 1 3/16 | 30.2 |
| L | Inner Ring Outside Diameter | 2 19/64 | 58.3 |
Values as printed for TB-28, the base part of TB-28C; the options in this part number do not change the housing. Verify critical dimensions before ordering.
- Housing Base
- Solid
- Thread Size
- 1/2-13
- Rolling Element
- Ball Bearing
- Overall Length (in)
- 5
- Base Width (in)
- 2
- Overall Height (in)
- 4.25
- Overall Width (in)
- 2
- Bore Shape
- Straight
- Housing Construction
- One Piece
- Misalignment Type
- Static Only
- Housing Color
- Black
- Outer Ring Land Profile
- Standard
- Bore Size - Inch
- 1.75Shaft size chart
- Thread Depth (in)
- 0.75
- Base to Center Height (in)
- 2.125
- Cage Material
- PPS - Polyphenylene Sulfide
- Length Through Bore (in)
- 2.000
- Seal Type (Product Selection)
- Single Lip Contact Seal
- Housing Type (Product Selection)
- Pillow Block, Tapped Base
- Housing Style
- Pillow Block
- Inner Race Heat Treat Method
- Zone-Hardened
- Ability to Relubricate
- Yes
- Housing Coating
- Powder Coated
- Bearing Type
- Standard Duty
- Inner Ring Outside Diameter (in)
- 2.297
- Misalignment Capability
- ±2.0° Misalignment - Static Only
- Radial Clearance
- Standard
- Maximum Speed (RPM)
- 3800
- Centerline to Outermost Bearing Face (in)
- 1.188
- Housing Material
- Cast Iron
- Shaft Locking Type
- Set Screw
- Fixed vs. Expansion
- Fixed
- Lubricant
- Lithium Complex NLGI 2 Grease
- Size Code
- 2-111
- Max Operating Temperature (F)
- 220
- Static Load Rating (lb)
- 5,139
- End Cap Available
- No
- Bolt Spacing (in)
- 3.750
- Base Length (in)
- 5.000
- Bearing Insert Finish
- Black Oxide
- Bearing Insert Material
- 52100 Bearing Steel
- Cage Type
- Land Riding Retainer
- Dynamic Load Rating (lb)
- 7,901
- Grease Fitting Thread Size
- 1/4-28
- Housing Width (in)
- 2
- Duty/Series
- Standard
- Optional Seal
- Contact
- Operating Temperature Range (F)
- -20° to 220°F
- Dynamic Load Rating (N)
- 35,144
Always verify dimensions, load ratings, material, and seal type before ordering.
- Brandi
- Sealmaster
- Mfg. Catalog Numberi
- TB-28C
- Mfg. Part Numberi
- 703773
- GDS #i
- GDS-116456
- Categoryi
- Pillow Blocks
- UPCi
- 662461024522
- Inserti
- 2-112C
TB-28 options
| Part # | Configuration | Price | View |
|---|---|---|---|
| TB-28 | Base configuration | $275.26 | View |
| TB-28CThis part | Contact seal | $275.26 | |
| TB-28T | Skwezloc concentric locking collar | $322.34 | View |
| TB-28 DRT | High-contamination seal | $1,614.80 | View |
| TB-28 HI | High-performance high temperature | $1,642.73 | View |
Bearing insert used in this unit
| Part # | Name | Each |
|---|---|---|
| 700030 | 2-112 | $149.73 |
Common Questions
Is this a genuine Sealmaster part?
Yes. GDS Supply supplies the genuine Sealmaster TB-28C, manufacturer article number 703773. Its UPC is 662461024522.
